Sep.11 (GMM) Mark Webber on Saturday morning suffered yet another technical problem in preparation for the Italian grand prix.

In the final practice session before qualifying, the Australian's Red Bull ground to a halt at Monza ? just as it had due to a loss of water pressure on Friday.

Team boss Christian Horner said the championship challenger had suffered a "complete loss of power", amid suggestions it was an engine problem.

His teammate Sebastian Vettel, who has been on the pace all weekend so far, was once again quick on Saturday morning, mere hundredths behind race favourite Lewis Hamilton's McLaren.

In the presence of their president Luca di Montezemolo, the Ferraris were third and fourth.

The F10s are fitted with fresh engines for qualifying, taking their tallies to the maximum eight units for the season.

"No worries, it is just a strategic decision. If there is a place where a fresh unit can give some help, it is Monza!" said the team on Twitter.

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